What is the main role of the Activity component in Android application architecture?

An Activity in Android is a fundamental component representing a single screen with a user interface. Its main role is to manage the lifecycle of the screen and interact with the user.

Tasks of an Activity:

• Displaying UI and handling user actions.
• Managing transitions between screens (launching other Activities).
• Handling the lifecycle (creation, pause, resume, destruction) for efficient resource use.

Example: When launching an app, the main Activity usually starts, showing the main screen. When a button is pressed, another Activity can be launched to display details.